1. Scope: The Deep Ocean
2. Clips

Isla explains where the 'deep ocean' starts and what it is like the lower down you go underwater. Why do we need to travel in a submarine rather than scuba gear when exploring the deep ocean? How deep is the deepest part of the ocean?

Find out how scientists from the National Office of Ocean Exploration use ROVs (remote operated vehicles) to explore the ocean floor. What are some advantages of using ROVs rather than sending humans down in submarines? Log on to https://nautiluslive.org/ to see live footage!

Have you noticed how water in a pool is colder down the bottom? Isla does a cool experiment to show how water at different temperatures has different density levels. What is another reason for water having different densities? How does different water density affect the movement of the ocean currents?

Isla chats with the leader of the Exxpedition boat which is travelling around the world's oceans researching plastic in the ocean. What kind of plastic have they found in their research? Where do you think the different types of plastic come from? Visit www.shift.how for ideas on how to reduce plastic consumption.

Isla chats with the leader of the Exxpedition boat which is travelling around the world's oceans researching plastic in the ocean. What kind of plastic have they found in their research? Where do you think the different types of plastic come from? Visit www.shift.how for ideas on how to reduce plastic consumption.